Spool



E. A. SCH USTER SPOOL Filed June 21, 1934 I N V EN TOR. EA. Jam??? ATTORNEY Patented Nov. 3, 1936 UNITED STATES PATENT OFFICE SPOOL Application June 21, 1934, Serial No. 731,749

2 Claims.

This invention relates to spools and, among other objects, aims to provide improved bushings for textile spools. The main idea is to reclaim worn spools having wooden barrels and recondition them so that they will last longer than the original spools. After the wood bearings of spools become badly worn by the springs on the spool spindles or shafts, the spools are usually discarded because they wabble and will not reel the yarn uniformly on the barrels. The invention also contemplates the production of new spools having the improved bushings applied thereto.

Other aims and advantages of the invention 15 will appear in the specification, when considered in connection with the accompanying drawing, wherein:

Fig. 1 is a longitudinal sectional view of a well known type of spool showing one of the bushings ready to be applied;

Fig. 2 is a similar sectional View showing the bushings in place;

Fig. 3 is an end view of the spool; and

Fig. 4 is an enlarged view of one of the bushmgs.

Referring particularly to the drawing, the improved bushings are shown as being applied to an ordinary spool having a wooden barrel l and heads I I secured to the opposite ends. The heads are usually made of vulcanized fibre. In this instance, the barrel has one reduced end l2 over which one of the heads is fitted against a felt washer or gasket I3. The head is held in place by suitable fastening elements such as screws Id. The barrel presents a central bore l5 at one end and has an enlarged counterbore l6 which is closed by a wooden plug I! in the opposite end of the spool and having a bore Hi. The plug H is usually pressed and glued in place. The second head II is held on a reduced end IQ of the plug in the same manner as the first described head and the screws M at this end are shown as being driven through the joint between the plug and the barrel, clamping this head against the felt I3. 45 Spools of the type just described have been in general use. It has been found, however, that the wooden bearings soon become worn by the leaf springs on the spindles to such an extent that the spools wabble. When the bearings become badly worn, the spools are usually junked and replaced by new ones. In accordance with this invention, the worn spools are rebushed and reconditioned. It has been found that metal bushings are unsatisfactory for the purpose, because 55 metal bearings are too hard, causing the spools to slip too easily on the spindles. Metal bearings also cut the steel springs on the spindles, causing them to break. Experience has demonstrated that bushings made of non-metallic material,such

as vulcanized fibre, hard rubber, or bakelite are 5) best suited for this purpose because these materials yield slightly and provide a good grip for the spindle springs. These materials also eliminate wear and breakage of the steel springs on the spindles. In this instance, the openings I5 10 and I8 of the spool are bored to a diameter of such size as to receive the nipple ends of vulcanized fibre nipples 2E] and provide for pressed fits so that the bushings may be forced in the bearing openings by a suitable press (not shown). 1.) However, it is contemplated that the bushings maybe screw threaded and screwed into the bearing openings I5 and 18.

Referring to Figs. 1 and 4, the bushings are shown as having a series of annular grooves 2|, 20 22 and 23 on their inner ends. The ends are tapered or frusto-conical to provide for insertion in the openings and the first groove 2! is triangular or saw-toothed in cross-section with the teeth or circular edges pointing outwardly. The groove 22 is channel-shaped and the two grooves 23 are also triangular or saw-toothed in cross-section with the teeth pointing inwardly. Before the bushings are inserted, the grooves are filled with adhesive, such as glue 24 (Fig. 2). As they are forced in the openings, some of the glue is wiped off the inner end and accumulates in the groove 22 to insure a good adhesive joint in addition to the pressed fit, and thereby prevent the bushings from becoming loose. The purpose of the oppositely directed grooves is to prevent the bushings from being displaced longitudinally in either direction when the spools are being inserted on or removed from their spindles or shafts. 40

From the foregoing description, it will be seen that the operations involved in reconditioning an old spool are quite simple. They can be performed at a fraction of the cost of manufacturing new spools. The bushings can be made very cheaply by an automatic machine and fitted into the spool openings very rapidly. As hereinbefore stated, new spools of the type described can easily be equipped with the improved non-metallic bushings and will withstand more wear than the ordinary wooden bearings. Moreover, these bushings may be bored out and replaced when and if they become worn, thereby making it possible to use a spool until its heads and barrel have been broken or damaged beyond repair.

material to secure it in place and prevent longitudinal displacement.

2. In a textile spool having a wooden barrel presenting spindle bores in the opposite ends, a

pair of substantially cylindrical non-metallic 5 bushings pressed longitudinally into said bores and each having a roughened outer surface presenting projections extending in different directions which tend to bite into the walls of the bores and thereby resist longitudinal displace- 10 ment of the bushings in either direction.

ERVING A. SCHUSTER. 

